标签：获取 asc char 不用 etl func ret java image
代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>绝对位置</title>
<style type="text/css">
.box1 {
position: absolute;
top: 10px;
left: 10px;
width: 200px;
height: 200px;
background-color: blue;
}
.box1 .box2 {
position: absolute;
top: 100px;
left: 100px;
width: 200px;
height: 200px;
background-color: brown;
}
.box1 .box2 #box {
position: absolute;
top: 100px;
left: 100px;
width: 200px;
height: 200px;
background-color: chartreuse;
border: 2px solid #ddd;
}
</style>
</head>
<body>
<div class=‘box1‘>
<div class=‘box2‘>
<div id=‘box‘></div>
</div>
</div>
<script type="text/javascript">
// 用递归的思想来做
function get_layout(ele) {
const layout = {
// offsetWidth包含border
// clientWidth包含border
width: ele.offsetWidth,
height: ele.offsetHeight,
left: ele.offsetLeft,
top: ele.offsetTop
}
if (ele.offsetParent) {
const parentLayout = get_layout(ele.offsetParent)
layout.left += parentLayout.left
layout.top += parentLayout.top
}
return layout
}
// 不用递归
function get_layout(ele) {
let left = ele.offsetLeft,
top = ele.offsetTop
let p = ele.offsetParent
while (p) {
left += p.offsetLeft
top += p.offsetTop
p = p.offsetParent
}
return {
width: ele.offsetWidth,
height: ele.offsetHeight,
left: left,
top: top
}
}
let getBox = document.getElementById(‘box‘)
console.log(get_layout(getBox))
</script>
</body>
</html>
控制台效果
标签：获取 asc char 不用 etl func ret java image
原文地址：https://www.cnblogs.com/fanzhanxiang/p/10306687.html
